package com.ruoyi.process.controller;

import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;
import com.ruoyi.process.dto.FileInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.List;

/**
 * 通用请求处理
 *
 * @author ruoyi
 */
@RestController
public class CommonController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile(List<MultipartFile> files) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            AjaxResult ajax = AjaxResult.success();
            List<FileInfo> fileList = new ArrayList<>();
            for (MultipartFile file : files) {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                FileInfo fileInfo = new FileInfo(fileName, url);
                fileList.add(fileInfo);
            }
            ajax.put("fileList", fileList);
            return ajax;
        } catch (Exception e) {
            log.error("上传文件",e);
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }


    /**
     * 删除文件
     *
     * @param fileName 文件名称
     */
    @GetMapping("/common/delete")
    public AjaxResult fileDelete(String fileName, HttpServletResponse response, HttpServletRequest request) {
        boolean isSuccess=false;
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                AjaxResult.error(StringUtils.format("文件名称({})非法，不允许删除。 ", fileName));
            }
            log.info("fileName:{}",fileName);

            String filePrefix=Constants.RESOURCE_PREFIX+"/upload";
            fileName=fileName.startsWith(filePrefix)?fileName.substring(filePrefix.length()):fileName;

            log.info("proc fileName:{}",fileName);
            String filePath = RuoYiConfig.getUploadPath() + "/" + fileName;
            isSuccess = FileUtils.deleteFile(filePath);
        } catch (Exception e) {
            log.error("删除文件失败", e);
        }
        return isSuccess?AjaxResult.success("删除文件成功"):AjaxResult.error("删除文件失败");
    }

}
